Source file src/net/tcpsock_plan9.go

Documentation: net

     1  // Copyright 2009 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package net
     6  
     7  import (
     8  	"context"
     9  	"io"
    10  	"os"
    11  )
    12  
    13  func (c *TCPConn) readFrom(r io.Reader) (int64, error) {
    14  	return genericReadFrom(c, r)
    15  }
    16  
    17  func (sd *sysDialer) dialTCP(ctx context.Context, laddr, raddr *TCPAddr) (*TCPConn, error) {
    18  	if testHookDialTCP != nil {
    19  		return testHookDialTCP(ctx, sd.network, laddr, raddr)
    20  	}
    21  	return sd.doDialTCP(ctx, laddr, raddr)
    22  }
    23  
    24  func (sd *sysDialer) doDialTCP(ctx context.Context, laddr, raddr *TCPAddr) (*TCPConn, error) {
    25  	switch sd.network {
    26  	case "tcp", "tcp4", "tcp6":
    27  	default:
    28  		return nil, UnknownNetworkError(sd.network)
    29  	}
    30  	if raddr == nil {
    31  		return nil, errMissingAddress
    32  	}
    33  	fd, err := dialPlan9(ctx, sd.network, laddr, raddr)
    34  	if err != nil {
    35  		return nil, err
    36  	}
    37  	return newTCPConn(fd), nil
    38  }
    39  
    40  func (ln *TCPListener) ok() bool { return ln != nil && ln.fd != nil && ln.fd.ctl != nil }
    41  
    42  func (ln *TCPListener) accept() (*TCPConn, error) {
    43  	fd, err := ln.fd.acceptPlan9()
    44  	if err != nil {
    45  		return nil, err
    46  	}
    47  	tc := newTCPConn(fd)
    48  	if ln.lc.KeepAlive >= 0 {
    49  		setKeepAlive(fd, true)
    50  		ka := ln.lc.KeepAlive
    51  		if ln.lc.KeepAlive == 0 {
    52  			ka = defaultTCPKeepAlive
    53  		}
    54  		setKeepAlivePeriod(fd, ka)
    55  	}
    56  	return tc, nil
    57  }
    58  
    59  func (ln *TCPListener) close() error {
    60  	if err := ln.fd.pfd.Close(); err != nil {
    61  		return err
    62  	}
    63  	if _, err := ln.fd.ctl.WriteString("hangup"); err != nil {
    64  		ln.fd.ctl.Close()
    65  		return err
    66  	}
    67  	if err := ln.fd.ctl.Close(); err != nil {
    68  		return err
    69  	}
    70  	return nil
    71  }
    72  
    73  func (ln *TCPListener) file() (*os.File, error) {
    74  	f, err := ln.dup()
    75  	if err != nil {
    76  		return nil, err
    77  	}
    78  	return f, nil
    79  }
    80  
    81  func (sl *sysListener) listenTCP(ctx context.Context, laddr *TCPAddr) (*TCPListener, error) {
    82  	fd, err := listenPlan9(ctx, sl.network, laddr)
    83  	if err != nil {
    84  		return nil, err
    85  	}
    86  	return &TCPListener{fd: fd, lc: sl.ListenConfig}, nil
    87  }
    88  

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